1095 heat treat: austenitize, quench & temper chart
1095 is a simple carbon knife steel. Here is the full heat-treat schedule — austenitizing temperature, quench, cryo and a tempering-temperature chart mapping each temper to final HRC — with every number cited to the source, not guessed.
The 1095 heat-treat schedule
Austenitize: 1450–1500°F (1475°F recommended), hold 10 min once to temperature. A controlled oven or kiln beats forge colour for hitting this window repeatably.
Quench: Parks 50. Also acceptable: Duratherm 48. Never use Water, Brine, Canola oil, Parks AAA. 1095 is a low-hardenability steel — a fast oil like Parks 50 is required. Slower oils leave soft spots.
Cryo (optional): Optional for simple carbon; marginal benefit.
Temper: 2 passes of 2 h at 400°F for the recommended edge (~58–60 HRC). Temper twice for 2 hours. 1095 has a narrower processing window than 1084 — reduced austenitize temperature can improve toughness.
1095 tempering-temperature chart
Two-hour temper (×2), HRC after cryo where used. Pick the tempering temperature for the hardness your knife needs:
| Tempering temperature | Resulting hardness |
|---|---|
| 350°F (177°C) | 62–63 HRC |
| 400°F (204°C) | 58–60 HRC |
| 450°F (232°C) | 56–58 HRC |
Target hardness for 1095 by knife type
| Use | Recommended HRC |
|---|---|
| Kitchen | 60–61 HRC |
| EDC | 59–61 HRC |
| Hunter | 58–59 HRC |
| Hard-use chopper | 56–58 HRC |
Forging 1095
Forge-friendly with care: 1095's high carbon content makes the soak window narrower than 1084's. Forge HT consistency drops vs. furnace.
Most common mistake
Narrow soak window — past 10 min at 1475°F, grain growth accelerates. 1095 has shown relatively low toughness in Larrin's testing vs. 1084 / 80CrV2.
FAQ
What temperature do you austenitize 1095?
1450–1500°F, with 1475°F recommended, held 10 min once the steel is fully up to temperature.
What is the best quench for 1095?
Parks 50. Duratherm 48 also work. Never Water, Brine, Canola oil, Parks AAA. 1095 is a low-hardenability steel — a fast oil like Parks 50 is required. Slower oils leave soft spots.
What HRC does 1095 reach?
56–63 HRC across the usable tempering range; about 60–61 HRC for a kitchen knife. Temper at 400°F for ~58–60 HRC.
How do you temper 1095?
2 passes of 2 h at 400°F for the recommended edge. See the chart above to pick a different tempering temperature for a harder or tougher blade.
Can you forge 1095?
Forge-friendly with care: 1095's high carbon content makes the soak window narrower than 1084's. Forge HT consistency drops vs. furnace.
What you need to heat-treat 1095
Repeatable hardness comes from controlling temperature and quench speed — eyeballing colour is how blades end up soft or cracked.
- A heat-treat oven or kiln holds the 1475°F austenitizing temperature — the single biggest factor in repeatable hardness.
- Quench in Parks 50 for the cited as-quenched hardness.
- Verify the result with a Rockwell hardness tester or hardness files — don't trust the schedule blind.
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Sources
Heat-treat schedules are the cited published values for 1095; every furnace, quench and blade geometry varies, so verify against your own hardness testing. Getting steel to non-magnetic is not the same as reaching austenitizing temperature — use a controlled oven or kiln for repeatable results.